Trump wants to split the MMR vaccine. Experts say that's unlikely — and comes with consequences

President Donald Trump's latest executive order calls for splitting the measles, mumps and rubella, or MMR, vaccine into three separate shots – but doctors and other experts say that effort has no scientific basis and is unlikely to get off the ground. Trump on Monday said without evidence that the vaccine could be "quite lethal" in its combined form, even though the shot has repeatedly been proven safe and effective across large-scale studies. Experts called that claim "completely false" and said there is no scientific data showing benefits of separating the shot. Splitting the vaccine would also come with "significant logistical limitations," and having three standalone shots that require multiple doctor's visits could result in more delayed or missed vaccinations among kids, Neil Maniar, a public health professor at Northeastern University, told CNBC. "They're not solving a problem here. They're creating a new one," Maniar said. "Based on false scientific rationale and political ideology, they're changing something that works into something that we have no idea what it will do." The U.S. has already seen a decrease in the share of parents who are willing to use the MMR shot to v...